WM9082 WOLFSON [Wolfson Microelectronics plc], WM9082 Datasheet - Page 11

• Manufacturer Part Number: WM9082
• Description: PDM Input Mono 3W Class D Speaker Driver
• Manufacturer: WOLFSON [Wolfson Microelectronics plc]

Production Data
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Table 2 WM9082 Page 1 Control Codes
Table 3 WM9082 Page 2 Control Codes
The output driver slew-rate control is configurable using the SR[1] and SR[0] bits. These fields are
defined in Table 4. The slew-rate Control Code sequences are described in Table 6.
Table 4 Output Slew Rate Control bits
The output driver operating mode is configurable using the PC1[0] and PC2[1:0] bits. These fields are
defined in Table 5. Selected operating mode Control Code sequences are described in Table 6.
Table 5 Operating Mode Control bits
Code 1
Code 2
Code 3
Code 4
Code 5
Code 6
Code 7
Code 8
Code 9
Code 10
Code 1
Code 2
Code 3
Code 4
Code 5
Code 6
Code 7
Code 8
Code 9
Code 10
PC1[0]
ID
ID
SR[1]
1
1
1
1
0
0
0
1
1
Start Up (3.6V SPKVDD)
Standby
EMI control 1
32kHz mode control
High Pass Filter control
Page 2 access
Reserved
Reserved
Start Up (3.6V SPKVDD)
Start Up (5.0V SPKVDD)
Reserved
Reserved
Performance control 1
Reserved
Reserved
Reserved
Reserved
Reserved
EMI control 2
Performance control 2
FUNCTION
FUNCTION
PC2[1:0]
XX
00
01
10
11
SR[0]
0
1
0
1
Best PSRR
Fast Start-Up for default SPKVDD
Disable Class D output
Invert SR[1]
Select 32kHz sample rate mode
Disable 2Hz High Pass Filter
Enable Page 2 Control Codes
Start-Up for SPKVDD = 3.6V
Start-Up for SPKVDD = 5.0V
Invert PC1[0]
Invert SR[0]
Increment PC2[1:0]
↑
↑
↑
(OUTPUT RISE / FALL TIME)
OUTPUT SLEW RATE
5ns (Default)
DESCRIPTION
DESCRIPTION
DESCRIPTION
Best SNR
10ns
20ns
40ns
↓
↓
↓
PD, August 2012, Rev 4.1
(default)
WM9082
CONTROL
CONTROL
CODE
CODE
AA
8B
D1
D2
D4
D8
AA
8B
D1
D2
D4
D8
66
F0
39
56
66
F0
39
56
11